Rackspace backup has been the best backup service someone need for their cloud storage. Rackspace backup runs in real time and they keep taking backups regularly. I used rackspace with my previous organization and we used rackapce backup services. Rackspace provides the following kind of backup services 9Atleast i am aware about these for now):
File level backups
Image backup keeps the backup of your Linux server including the system files and configurations. File level backups can help restoring individual files when required. Incremental backups keeps taking the backup of updated code ever. there could be additional backup services as well by rackspace but I am only aware about these for now.
Its easy to restore backups when needed via contacting the support team.
Nothing as of now. I have been able to backup files and restore them as needed. have not seen any issue yet.
I think this is the best backup service for now. Well you have to use rackspace cloud in order to use their services. but i don't think there is any issue going with rackspace for your business needs. They have the right team to manage your services and help you with best of their services.
My organization used to keep customer files and the websites on the cloud. The backup service has helped us meeting our objective in keeping the backups available safely.
We have been satisfied with their services.